86 



LAND AND FRESH-WATER SHELLS OF N. A. [PART III. 



and is, iu form, a miniature representation o{ Paludinaponderosa, 

 except that it is decidedly umbilicated." {Hal- 

 deman.) 



Specimens labelled by Mr. Anthony are in 

 the collection of the Smithsonian. Kiister's 

 description now follows. His figure is copied 

 in Fig. 169. He quotes Lymnseus emarginatus, 

 Say, as a synonym on authority of Bronn. 



Paludina emarginata, KtiSTER. — Shell small, narrowly 

 rimate, ovate conic, apex eroded, sub-truncated, shin- 

 ing, thin, delicately striate, dark horn-colored ; spire 

 conic, whirls 4, convex ; suture deep ; aperture ovate ; 

 peristome straight, acute, its columellar portion reflected. {Kuster.) 



Paludina 



eniarginata. 



(Mag. 5 times.) 



Cat. No. 

 9026 



No.ofSp. 



Locality. 



Oiiio. 



From whom received. 



J. G. Antliony. 



Fig. 170. 



Arnnioola 



granura. 



(Mag. 3 



times) 



Aiuiiicola granum, Say. — Shell conic-ovate ; whirls not percep- 

 tibly wrinkled, convex ; suture deeply impressed ; aperture 

 orbicular, hardly angulated above ; labium with the superior 

 edge appressed to the surface of tlie penultimate volution ; um- 

 bilicus rather small, profound. 



Length less than one-tenth of an inch. Inhabits Pennsylvania. 

 TUis very small species i.s found' in plenty in the fish ponds 

 at Harrowgate, crawling on the dead leaves which have fallen 

 to the bottom of tlie water. It resembles P. Instrica, but is a 

 smaller, less elongated shell, and the superior portion of the labium is not 

 an unaltered continuation of the lips as in that shell, but is appressed to 

 the surface of the penultimate whirl in the usual manner of calcareous 

 deposition upon that part. (^Say.) 



Paludina grana, Say, Journ. A. N. Sc. II, 378 (1822) ; BiNXEY'sed. p. 110. 

 Amnicola gramtm, Haldeman, Mon. p. 17 (1844?). — De Kay, N. Y. Moll. 

 88 (1843). 



Ranges from Lake Superior to Virginia. 



Fig. 150 is drawn from an authentic specimen given by Mr. 

 Say to the Pliiladelphia Academy. 



